package targetToOffer.firstDay;

/**
 * @author Godc
 * @description 反转链表
 */
public class ReverseList {
}
class ReverseListSolution {
    public ListNode reverseList(ListNode head) {
        ListNode pre = null;
        ListNode cur = head;
        while (cur!=null){
            ListNode next = cur.next;
            cur.next = pre;
            pre = cur;
            cur = next;
        }
        return pre;
    }
}